In 1932, Australia faced an invasion. Twenty thousand emus descended on wheat farms in Western Australia, destroying crops and livelihoods. The government's solution? Send in the military with machine guns. What followed was one of the most humiliating defeats in military history - humans vs. birds, and the birds won.

The Australian army arrived with two soldiers, two machine guns, and 10,000 rounds of ammunition, confident they'd wipe out the emu population in days. But the emus had other plans. They scattered into small groups, used guerrilla tactics, and could outrun the soldiers' trucks. After weeks of combat, the military had fired thousands of rounds and killed fewer than 1,000 emus while the birds continued destroying farms.

The press had a field day. One ornithologist joked that if the emus had a military division, they'd face ...